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- Path: sparky!uunet!portal!cup.portal.com!pk-asdg
- From: pk-asdg@cup.portal.com (Perry S Kivolowitz)
- Newsgroups: comp.sys.amiga.graphics
- Subject: Re: Color Postscript printing
- Message-ID: <73225@cup.portal.com>
- Date: Fri, 8 Jan 93 19:31:12 PST
- Organization: The Portal System (TM)
- Distribution: world
- References: <73151@cup.portal.com>
- Lines: 40
-
- John asks:
-
- >I need some help with ArtExpression, I'm trying to get some color
- >letterheads created and am having a heck of a time.
-
- >My printer says he can use my postscript file but needs something called
- >a "spot seperation file" to create the colors for the color plates or
- >something like that. I don't know what that is, and he doesn't know what
- >an Amiga is so we are kinda stuck right there.
-
- >I asked if that was the same thing as the 4 color seperation and he said
- >no.
-
- >Anyone out there who can explain to me how to get my 2 color document
- >printed would be very much appreciated.
-
-
- The four color process you are familiar with utilizes four standard inks
- (CYMK) to reproduce a broad range of full color. The CMYK inks are often
- called process colors, and the separation often called a process sep.
-
- You could create a four color process separation to create your letter
- head. Usually letter head which doesn't contain a rainbow of colors would
- be printed using a ``mechanical'' or ``spot'' color separation.
-
- The difference is that instead of creating an arbitrary color as a mixture
- of process inks (CYMK), a spot separation places ink of the specifically
- desired color in the appropriate spots. Assuming a full intensity color,
- there will be no dots - solid ink. Screening (dots) would be used to
- create lower intensity shades of the same color (mixing white paper with
- colored ink).
-
- If the number of colors is low - spot color can often be less expensive.
- If special inks are required (like gold flec) - spot color is required.
-
- I know that Pro Page will produce mechanical seps (a specific color and
- only that color appears on a specific film). I don't know if Art Exp
- will.
-
- ASDG Tech SUpport
-